1.499 1.56 lathyathyathya pamwamba pamwamba osakanikirana pamwamba HMC 70/28mm bifocal mandala otentha kugulitsa kuwala mandala

Kodi Bifocal Lens Ndi Chiyani Ndipo Amagwira Ntchito Motani?

Pali mitundu yosiyanasiyana yamagalasi yomwe ilipo masiku ano, ambiri a iwo akukwaniritsa cholinga chimodzi kapena zingapo.Mu blog ya mwezi uno tikambirana magalasi a bifocal, momwe amagwirira ntchito, komanso ubwino wake pazovuta zosiyanasiyana za maso.

Magalasi agalasi a Bifocal ali ndi mphamvu ziwiri zokuthandizani kuwona zinthu patali mukataya mwayi wosintha kuyang'ana kwa maso anu chifukwa cha ukalamba, womwe umadziwikanso kuti presbyopia.Chifukwa cha ntchito yeniyeniyi, ma lens a bifocal nthawi zambiri amaperekedwa kwa anthu opitirira zaka 40 kuti athandize kubwezera kuwonongeka kwa maso chifukwa cha ukalamba.

Mosasamala chifukwa chomwe mukufunikira mankhwala owongolera masomphenya apafupi, ma bifocals onse amagwira ntchito mofanana.Gawo laling'ono m'munsi mwa lens lili ndi mphamvu zofunikira kuti mukonze masomphenya anu apafupi.Ma lens ena nthawi zambiri amakhala owonera patali.Gawo la mandala lomwe limaperekedwa pakuwongolera masomphenya apafupi litha kukhala limodzi mwamawonekedwe angapo:

• Mwezi wa theka - umatchedwanso gawo lathyathyathya, lolunjika kapena la D
• Gawo lozungulira
• Malo opapatiza amakona anayi, omwe amadziwika kuti gawo la riboni
• Theka lonse la lens la bifocal lotchedwa Franklin, Executive kapena E style

Nthawi zambiri, mukamavala ma lens a bifocal, mumayang'ana m'mwamba ndikudutsa patali ndi disolo pomwe mumayang'ana kutali kwambiri, ndipo mumayang'ana pansi ndikudutsa gawo laling'ono la mandala mukamayang'ana kwambiri zowerengera kapena zinthu zomwe zili mkati mwa mainchesi 18 kuchokera m'maso mwanu. .Ichi ndichifukwa chake gawo laling'ono la bifocal la lens limayikidwa kotero kuti mzere wolekanitsa magawo awiriwo ukhale pautali wofanana ndi chikope chakumunsi cha wovala.Ngati mumakhulupirira kuti magalasi a bifocal, kapena ma lens opitilira patsogolo kwambiri, akhoza kukhala chisankho choyenera pakuwonongeka kwamaso kwanu ndiye bwerani mu Convox Optical lero ndipo antchito athu ochezeka komanso odziwa zambiri atha kukuthandizani kuti musankhe bwino ma lens ndi mafelemu.